CVE-2017-17665
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn Octopus Deploy before 4.1.3, the machine update process doesn't check that the user has access to all environments. This allows an access-control bypass because the set of environments to which a machine is scoped may include environments in which the user lacks access.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceOctopus Deploy before 4.1.3 contains an authorization bypass where the machine update endpoint does not validate that the authenticated user has access to all environments being assigned to a machine. An attacker with limited environment access can update a machine's environment scope to include environments they should not have access to.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 4.1.3CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the installed Octopus Deploy versionCheck the Octopus Server UI (Help > About) or query the API endpoint /api /about, or check the installation directory for version informationAffected if The installed version is earlier than 4.1.3
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Verify access to machine management API endpointsNavigate to the Machines section in the Octopus Web UI or query the /api/machines endpoint using API keysAffected if You have access to create or modify machine records in Octopus Deploy
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Confirm whether environment scoping is in useCheck if any machines in the deployment have specific environments assigned rather than being unrestrictedAffected if Machines are configured with environment-specific scoping
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Test for proper authorization on machine environment updatesUsing an account with limited environment access, attempt to update a machine's assigned environments via the API (PUT /api/machines/{id}) to include an environment outside your granted permissionsAffected if The request succeeds without returning a 403 Forbidden error, indicating the authorization check is missing
You are affected if your Octopus Deploy version is earlier than 4.1.3 AND you have users with restricted environment permissions who can access the machine management API, as the authorization bypass allows them to assign machines to environments outside their permitted scope.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data4.1.3
Upgrade to Octopus Deploy 4.1.3 or later which includes proper authorization checks. If immediate upgrade is not possible, implement compensating controls such as audit logging of machine environment changes and review existing environment permissions.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-17665 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-17665 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data